Lockheed Martin has fallen 5.6 percent to $122.03 from Sept. 27 through Oct. 9. Raytheon declined 6.1 percent to $73.97 during the same period.

Federal agencies award more than $500 billion a year, or a rough average of $1.4 billion a day. With each day of the partial shutdown, the pipeline risks getting more clogged by late payments, halted work and canceled solicitations for new contracts.

Dayton is home to tens of thousands of defense contractor employees who support Wright-Patterson Air Force Base here and could be hit by any trickle down from the shutdown's impact on defense firms.

A proposal by Republicans in the U.S. House of Representatives on Thursday for a short-term extension of the debt limit did not include ending the government shutdown.